<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

</head>
<body>
<input type="button" value="按钮" onclick="f1()">

<script>
    //1.无参无返回值
    function f1() {
        console.log("f1")
    }
    //调用
    f1()
    //2.有参无返回值
    function f2(name,age) {
        console.log(name+":"+age)
    }
    f2("小泽老师",18)
    //3.无参有返回值
    function f3() {
        return "铃原爱蜜莉"
    }
    let info = f3();
    console.log(info)
    //4.有参有返回值
    function f4(x,y) {
        return x*y
    }
    let result = f4(8,9)
    console.log(result)
    //第二种声明方法的方式
    let f5 = function (name,age) {
        console.log(name+":"+age)
    }
    f5("樊隆",50)
    //第三种声明方法的方式
    let f6 = new Function("name","age","console.log(name+':'+age)")
    f6("谢辉阳",60)

</script>
</body>
</html>